attempt to force multipart for testing

Author: bcully

modules/repository-s3/src/internalClusterTest/java/org/elasticsearch/repositories/s3/S3RepositoryThirdPartyTests.java

@@ -102,6 +102,7 @@ protected Settings nodeSettings() {
                 TimeValue.timeValueMillis(randomLongBetween(defaultMillis, defaultMillis * 2))
             );
         }
+        settings.put(S3Repository.BUFFER_SIZE_SETTING.getKey(), S3Repository.MIN_PART_SIZE_USING_MULTIPART);
         return settings.build();
     }
 

test/framework/src/main/java/org/elasticsearch/repositories/AbstractThirdPartyRepositoryTestCase.java

@@ -290,7 +290,8 @@ public void testIndexLatest() throws Exception {
 
     public void testReadFromPositionWithLength() {
         final var blobName = randomIdentifier();
-        final var blobBytes = randomBytesReference(randomIntBetween(100, 2_000));
+        // forcing multipart temporarily
+        final var blobBytes = randomBytesReference(randomIntBetween(5 * 1024 * 1024 + 100, 5 * 1024 * 1024 + 2_000));
 
         final var repository = getRepository();
         executeOnBlobStore(repository, blobStore -> {